aetosaur anatomy animal antarctica anurognathid archaeopteryx archosaur archosauriformes archosauromorpha arm arthur conan doyle avemetatarsalia avialae azhdarchidae azhdarchoidea bat bavaria bear biological classification bird bone brain brazil carboniferous chordate choristodera clade cladistics coloborhynchus colugo condor confuciusornis convergent evolution cretaceous crocodile crocodilia crocodylomorpha crurotarsi ctenochasmatoidea cycnorhamphus devonian digital object identifier digitigrade dimorphodon dinosaur dinosauromorpha dsungaripteroidea dsungaripterus enantiornithes endotherm erythrosuchidae euparkeria femur finger flamingo flight flocculus flying and gliding animals flying squirrel fossil fossil trackway france genus geococcyx georges cuvier germanodactylus gliding godzilla greek language hair hatzegopteryx hesperornithes human ichthyornis ichthyosaur inch istiodactylidae jaw jeholopterus johann georg wagler johann jakob kaup jurassic kevin padian lake late cretaceous late jurassic late triassic list of pterosaur classifications list of pterosaurs lonchodectes ludodactylus lyme regis mammal mary anning modern birds mosasaur muscle nancy nemicolopterus neognathae notarium ordovician ornithischia ornithocheiroidea ornithodira ornithosuchidae paleognathae permian phytosaur pink plantigrade plesiosaur preondactylus prolacertiformes proterochampsidae proterosuchidae pteranodon pteranodontidae pterodactyloidea pterodactylus pterodaustro quadruped quetzalcoatlus rauisuchia reptile rhamphorhynchoidea rhynchosaur rodan saint-dizier santana formation saurischia sauropsida scapula scleromochlus sediment sharovipteryx silurian skeleton solnhofen limestone sordes south america spinosauridae tapejaridae terrestrial animal the lord of the rings thorax tibia triassic trilophosaur turtle ungulate vertebra vertebrate wikimedia commons wyvern zhejiangopterus